Trance, llewyg, llesmair

Trench, ffos, clawdd: ffosi, cloddio

Trough, cafn

Twelve, deuddeg

Wealth, cyfoeth, golud

Weight, pwys, pwysigrwydd

Whence, o ba le; pan

Wreath, amdorch: amdorchi

Wrench, dirdro: dirdroi

Wretch, adyn, truenyn